That's getting more into the realm of the Helmholz Filtering thing, which again, isn't about isolation, its all about acoustic preparation.

With today's DAWs, etc. not so much of a problem, though.

If you can record a good dry and nonreflective track from the mic, without too much in the way of bad standing waves, you can accomplish the rest using Plugins. Ambience, EQ tailoring, Compression, etc. will do the trick.


--Mac